| ( | X | − | 80 | − | 350 | × | 8 100 | ) | ( | 1 | − | 25 100 | ) | − | 750 | × | 10 100 | ÷ | 1000 | = | ( | X | − | 80 | ) | ( | 1 | − | 25 100 | ) | ÷ | 1550 |
| Left side of the equation = | ( | X | − | 80 | − | 350 | × | 8 100 | ) | ( | 1 | − | 25 100 | ) | − | 3 40 |
| ( | X | − | 80 | − | 350 | × | 8 100 | ) | ( | 1 | − | 25 100 | ) | − | 3 40 | = | ( | X | − | 80 | ) | ( | 1 | − | 25 100 | ) | ÷ | 1550 |
| Left side of the equation = | X | ( | 1 | − | 25 100 | ) | − | 80 | ( | 1 | − | 25 100 | ) | − | 350 | × | 8 100 | ( | 1 | − | 25 100 | ) | − | 3 40 |
| = | X | ( | 1 | − | 25 100 | ) | − | 80 | ( | 1 | − | 25 100 | ) | − | 28 | ( | 1 | − | 25 100 | ) | − | 3 40 |
| = | X | × | 1 | − | X | × | 25 100 | − | 80 | ( | 1 | − | 25 100 | ) | − | 28 | ( | 1 | − | 25 100 | ) | − | 3 40 |
| = | 3 4 | X | − | 80 | ( | 1 | − | 25 100 | ) | − | 28 | ( | 1 | − | 25 100 | ) | − | 3 40 |
| = | 3 4 | X | − | 80 | × | 1 | + | 80 | × | 25 100 | − | 28 | ( | 1 | − | 25 100 | ) | − | 3 40 |
| = | 3 4 | X | − | 80 | + | 20 | − | 28 | ( | 1 | − | 25 100 | ) | − | 3 40 |
| = | 3 4 | X | − | 2403 40 | − | 28 | ( | 1 | − | 25 100 | ) |
| = | 3 4 | X | − | 2403 40 | − | 28 | × | 1 | + | 28 | × | 25 100 |
| = | 3 4 | X | − | 2403 40 | − | 28 | + | 7 |
| = | 3 4 | X | − | 3243 40 |
3 4 | X | − | 3243 40 | = | ( | X | − | 80 | ) | ( | 1 | − | 25 100 | ) | ÷ | 1550 |
| Right side of the equation = | X | ( | 1 | − | 25 100 | ) | × | 1 1550 | − | 80 | ( | 1 | − | 25 100 | ) | × | 1 1550 |
| = | X | ( | 1 | − | 25 100 | ) | × | 1 1550 | − | 8 155 | ( | 1 | − | 25 100 | ) |
| = | X | × | 1 | × | 1 1550 | − | X | × | 25 100 | × | 1 1550 | − | 8 155 | ( | 1 | − | 25 100 | ) |
| = | X | × | 1 1550 | − | X | × | 1 6200 | − | 8 155 | ( | 1 | − | 25 100 | ) |
| = | 3 6200 | X | − | 8 155 | ( | 1 | − | 25 100 | ) |
| = | 3 6200 | X | − | 8 155 | × | 1 | + | 8 155 | × | 25 100 |
| = | 3 6200 | X | − | 8 155 | + | 2 155 |
| = | 3 6200 | X | − | 6 155 |
3 4 | X | − | 3243 40 | = | 3 6200 | X | − | 6 155 |
3 4 | X | − | 3 6200 | X | = | - | 6 155 | + | 3243 40 |
4647 6200 | X | = | - | 6 155 | + | 3243 40 |
4647 6200 | X | = | 20097 248 |
| X | = | 20097 248 | ÷ | 4647 6200 |
| = | 20097 248 | × | 6200 4647 |
| = | 6699 | × | 25 1549 |
| X | = | 167475 1549 |
| X | = | 108.118141 |